apparatus vs equipment

apparatus and equipment both are nouns.

Word	Noun	Adjective	Verb	Adverb
apparatus	Yes	No	No	No
equipment	Yes	No	No	No

As nouns, equipment is a hypernym of apparatus; that is, equipment is a word with a broader meaning than apparatus:

apparatus: equipment designed to serve a specific function
equipment: an instrumentality needed for an undertaking or to perform a service

apparatus (noun)	equipment (noun)
equipment designed to serve a specific function	an instrumentality needed for an undertaking or to perform a service
(anatomy) a group of body parts that work together to perform a given function